Robust control systems synthesis is generally recast as a class of robust feasibility problems which is to find a solution satisfying a set of parameter-dependent convex constraints for all possible parameter values. For this class of the problems, a stochastic ellipsoid method with multiple cuts each of which corresponds to each of the constraint is proposed, where a new update rule is present...

We extend a particular access control framework, the Privilege Calculus, with a possibility to override denied access for increased flexibility in hard to define or unanticipated situations. We require the overrides to be audited and approved by appropriate managers. In order to automatically find the authorities who are able to approve an override, we present an algorithm for authority resolut...

the aim of this work is to investigate the variational discretization and mixed finite element methods for optimal control problem governed by semi linear parabolic equations with integral constraint. the state and co-state are approximated by the lowest order raviart-thomas mixed finite element spaces and the control is not discreted. optimal error estimates in l2 are established for the state...

With the method of theoretical analysis, this thesis, systematically analyzed the limitations of the present theory of accounting in recycle economy and the reasons for that, analyzed the characteristics of accounting in recycle economy, and, according to the internal demand of recycle economy, put forward brand new development orientation of theory of accounting that would be suitable for recy...